column chromatography silica gel

Detailed Product Description
1wide pore column chromatography silica gelclassified as industrial grade wide pore column chromatography silica gel and reagent grade column chromatography silica gel according to its purity
2narrow pore column chromatography silica gel
main specifications include:
180--250μm (60-80mesh)
150--180μm 80-100mesh
125--180μm 80-120mesh
75--150μm 100-200mesh
45--75μm 200-300mesh

Item code	Particle size	mesh	Average pore diameter	Specific surface area	Pore volumeapproximately
SG1101	180-250μm	60-80	20-30A	>600m2/g	0.4ml/g
SG1102	150-180μm	80-100	20-30A	>600m2/g	0.4ml/g
SG1103	125-180μm	80-120	20-30A	>600m2/g	0.4ml/g
SG1104	75-150μm	100-200	20-30A	>600m2/g	0.4ml/g
SG1105	45-75μm	200-300	20-30A	>600m2/g	0.4ml/g
Column chromatography silica gel SG11 series wide pore
Item code	Particle size	mesh	Average pore diameter	Specific surface area	Pore volumeapproximately
SG1111	180-250μm	60-100	80-100A	300-400m2/g	0.8ml/g
SG1113	125-180μm	80-120	80-100A	300-400m2/g	0.8ml/g
SG1114	75-150μm	100-200	80-100A	300-400m2/g	0.8ml/g
SG1115	45-75μm	200-300	80-100A	300-400m2/g	0.8ml/g

3) Reagent column chromatography silica gel and its application
   a reagent column chromatography silica gel belongs to colloidal-state system with solid characteristics, which is composed of colloidal particles with condensate structure.  The colloidal particle is the polycondensate of hydrated silica gel (multi-silica acid), belongs to a non-crystalline-state substance. The interspace of aggregation of colloidal particle forms the inner micro interspace structure of reagent column chromatography silica gel particle. Therefore, it is a kind of premium quality adsorption material with rich fine porous structure, high specific surface area, high purity and high activity.
    the main performance of reagent column chromatography silica geladsorption, which depends on the fine porous structure and the surface of inner pore formed in process of the raw material silica gel production. Therefore, much attention to the fine selection of the quality of raw material (wide pore granular silica gel) must be paid first. The specifications in fine selection should be controlled: adsorption capacity 80±2%,specific surface area about 360m2/g,average pore diameter is requested around 9nm90 Angstrom).Further process shall be made on the basis of raw material selection. its main process arecrushing raw material, classifying particle size, acid treatment, washing with purified water and drying, packing and testing.
    The main parameters that need controlling for reagent column chromatography:
chloridecl≤0.004%
iron (Fe) ≤0.02%
PH(10% water suspension)5-6
    the main uses of reagent column chromatography silica gel as follows
1 used for Chinese herb medicine and chemical synthesis pharmaceuticals and the separation & purification of biological active substance
2 used for abstraction of such polypeptide of macromolecule protein as biological active substance in industrial process of biological ferment and also used for acid engineering technology
3 preparation of highly-purified substances through separation & adsorption of column chromatography silica gel
4 refining & dehydration of organic substance
5 removal of harmful ingredients from edible vegetable oil
6 used for refining of petroleum articles, such as extracted oil ( the retained part of naphtha at 600C-900C), removal of the impurity like aromatic hydrocarbon.

  1with rigid skeleton structure, high mechanical strength,can stand the pressure within 30MPa
  2excellent adsorption performance; It has ideal separation function to similar character and structure, even to isomer.
  3it has good thermal stability and chemical stability
  4compared with organic column padding, silica gel is a solid, colloidal gel based on SiO2 matrix,its structure is compact, which will not pollute target product because there is no organic matter that can flow in process of application
  5It can have selective adsorption and purification of the components of isomer from multi-component solution
  6in preparation of column chromatography silica gel, a series of products with average pore diameter 20Å-20000Å can be produced through the control of different process conditions in order to adapt to the separation & purification of the substances with different character, molecular weight and molecular structure.
noteWe can process the product according to your demand if you have any special request.